/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:45,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:45,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:45,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:45,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:45,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:45,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:45,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:45,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:45,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:45,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:45,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:45,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:45,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:45,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:45,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:45,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:45,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:45,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:45,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:45,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:45,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:45,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:45,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:45,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:45,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:45,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:45,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:45,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:45,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:45,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:45,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:45,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:45,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:45,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:45,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:45,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:45,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:45,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:45,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:45,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:45,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:26:45,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:45,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:45,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:45,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:45,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:45,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:45,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:45,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:45,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:45,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:45,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:45,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:45,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:45,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:45,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:45,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:45,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:45,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:45,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:45,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:45,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:45,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:45,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:45,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:45,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:45,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:45,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:45,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:45,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:45,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:45,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:45,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:45,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:45,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:45,952 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:45,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-10-28 14:26:46,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e0acaeb/b1aaaa779de742f6a7d9b0929fbe6b2b/FLAGaac8974b7 [2020-10-28 14:26:46,628 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:46,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-10-28 14:26:46,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e0acaeb/b1aaaa779de742f6a7d9b0929fbe6b2b/FLAGaac8974b7 [2020-10-28 14:26:46,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e0acaeb/b1aaaa779de742f6a7d9b0929fbe6b2b [2020-10-28 14:26:46,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:46,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:46,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:46,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:46,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:46,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:46" (1/1) ... [2020-10-28 14:26:46,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33743a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:46, skipping insertion in model container [2020-10-28 14:26:46,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:46" (1/1) ... [2020-10-28 14:26:46,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:46,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:47,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:47,195 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:47,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:47,246 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:47,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47 WrapperNode [2020-10-28 14:26:47,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:47,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:47,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:47,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:47,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... [2020-10-28 14:26:47,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:47,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:47,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:47,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:47,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:26:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-28 14:26:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-28 14:26:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:26:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:47,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:26:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-28 14:26:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-28 14:26:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:26:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:48,150 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:48,150 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 14:26:48,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:48 BoogieIcfgContainer [2020-10-28 14:26:48,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:48,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:48,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:48,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:48,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:46" (1/3) ... [2020-10-28 14:26:48,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b21a018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:48, skipping insertion in model container [2020-10-28 14:26:48,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:47" (2/3) ... [2020-10-28 14:26:48,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b21a018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:48, skipping insertion in model container [2020-10-28 14:26:48,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:48" (3/3) ... [2020-10-28 14:26:48,161 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-10-28 14:26:48,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:48,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:48,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:48,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:48,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:48,220 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:48,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:48,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:48,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:48,221 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:48,221 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 14:26:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:26:48,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:48,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:48,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1719514889, now seen corresponding path program 1 times [2020-10-28 14:26:48,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:48,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196080605] [2020-10-28 14:26:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:48,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:26:48,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:26:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-28 14:26:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:48,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:26:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:26:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:48,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:48,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:26:48,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:48,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:26:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:26:49,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:49,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:26:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:26:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:49,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:26:49,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:26:49,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:49,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:26:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:49,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:49,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196080605] [2020-10-28 14:26:49,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:49,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:49,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247544886] [2020-10-28 14:26:49,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:49,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:49,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:49,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:49,153 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-28 14:26:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:49,329 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-28 14:26:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:49,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 14:26:49,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:49,339 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:26:49,339 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 14:26:49,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 14:26:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 14:26:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:26:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-10-28 14:26:49,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 24 [2020-10-28 14:26:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:49,388 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-10-28 14:26:49,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-10-28 14:26:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:26:49,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:49,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:49,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:49,391 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:49,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:49,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1939701542, now seen corresponding path program 1 times [2020-10-28 14:26:49,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:49,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190536471] [2020-10-28 14:26:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:49,466 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:49,466 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:49,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:49,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:49 BoogieIcfgContainer [2020-10-28 14:26:49,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:49,491 INFO L168 Benchmark]: Toolchain (without parser) took 2538.66 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 115.1 MB in the beginning and 135.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:49,492 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 155.2 MB. Free memory is still 132.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:49,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.67 ms. Allocated memory is still 155.2 MB. Free memory was 114.4 MB in the beginning and 134.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:49,494 INFO L168 Benchmark]: Boogie Preprocessor took 141.56 ms. Allocated memory is still 155.2 MB. Free memory was 134.0 MB in the beginning and 139.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:49,495 INFO L168 Benchmark]: RCFGBuilder took 761.08 ms. Allocated memory is still 155.2 MB. Free memory was 138.6 MB in the beginning and 118.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:49,496 INFO L168 Benchmark]: TraceAbstraction took 1334.51 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 118.0 MB in the beginning and 135.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:49,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 155.2 MB. Free memory is still 132.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.67 ms. Allocated memory is still 155.2 MB. Free memory was 114.4 MB in the beginning and 134.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.56 ms. Allocated memory is still 155.2 MB. Free memory was 134.0 MB in the beginning and 139.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 761.08 ms. Allocated memory is still 155.2 MB. Free memory was 138.6 MB in the beginning and 118.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1334.51 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 118.0 MB in the beginning and 135.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L71] CALL, EXPR fabs_double(x) [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] RET, EXPR fabs_double(x) [L71] double res = fabs_double(x); [L74] CALL, EXPR isinf_double(res) [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] RET, EXPR isinf_double(res) [L74] COND TRUE !isinf_double(res) [L75] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 21 SDs, 0 SdLazy, 26 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...